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Why is (-2) x (-3) equal to +6 ?
Author:
Judah L Schwartz
Can you use this applet to build an argument that will explain the multiplication of signed numbers to students?
GeoGebra
New Resources
Blancmange curve (fractal)
Dodecahedron
Quiz: Finding Average Rate of Change
Explore the invariant lines of matrix {{-2,5},{6,-9}}
Shadow of a Cube (v2)
Discover Resources
Further Coordinate Geometry
Linear Graphs
Blue Roof
מעגל חסום במשולש
Barringer_2
Discover Topics
Solids or 3D Shapes
Combinatorics
Vectors
Scatter Plot
Arithmetic Operations